PREFATORY NOTICE. 
PSNI, MERU ps CLR ere aaa vetcle 
Ir will be noticed that in the present Botany Bulletin a slight 
‘departure has been made from those previously issued, a brief Latin 
diagnosis preceding the full English description of all new species. 
I am not a believer in the rule adopted at the last International 
Botanical Congress that descriptions of all new species should be 
regarded as invalid unless accompanied by a Latin diagnosis, and 
cannot see the necessity for it when the description is supplemented 
by an illustration. The rule has its advantages, however, and is often 
a great help, saving one the trouble of ploughing through a mass of 
material in a foreign language. For the sake of uniformity if for no 
other reason, I prefer to give the descriptions of new species as here 
‘set forth, at least until the rule is rescinded at a future international 
or other conference. 
